Earthquake: the shaking and trembling that results from the movement beneath Earth's surface
Stress: a force that acts on rock to change its shape or volume
Shearing: stress that pushes a mass of rock in two opposite directions
Tension:a force that pulls a on the crust, stretching rock so that it becomes thinner in the middle
Compression:a force that squeezes rock until it folds or breaks
Deformation: any changes in the volume or shape in Earth's crust
Hanging Wall: the block of rock that forms the upper half of the fault
Footwall:the block of rock that forms the lower half of the fault
Strike-slip fault:the rocks on either side of the fault slip past each other side ways with little up or down motion
Normal fault:the fault is at an angle, so one block of the rock is above, the other is below
Reverse fault:when the rocks move in opposite directions
Fault-block mountain:it is when normal faults uplift asingle block of rock
Folds:a bend in rock that forms when compression shortens and thickens part of Earth's crust
Anticline: a fold in rock that bends upward into an arch
Sycline: a fold in a rock that bends downward
Plateau:A large area of falt land elevated above sea leval
Table of Contents
Earths crust in motion
Vocabulary
Earthquake: the shaking and trembling that results from the movement beneath Earth's surface
Stress: a force that acts on rock to change its shape or volume
Shearing: stress that pushes a mass of rock in two opposite directions
Tension:a force that pulls a on the crust, stretching rock so that it becomes thinner in the middle
Compression:a force that squeezes rock until it folds or breaks
Deformation: any changes in the volume or shape in Earth's crust
Hanging Wall: the block of rock that forms the upper half of the fault
Footwall:the block of rock that forms the lower half of the fault
Strike-slip fault:the rocks on either side of the fault slip past each other side ways with little up or down motion
Normal fault:the fault is at an angle, so one block of the rock is above, the other is below
Reverse fault:when the rocks move in opposite directions
Fault-block mountain:it is when normal faults uplift asingle block of rock
Folds:a bend in rock that forms when compression shortens and thickens part of Earth's crust
Anticline: a fold in rock that bends upward into an arch
Sycline: a fold in a rock that bends downward
Plateau:A large area of falt land elevated above sea leval
Outline
diagrams